[INFO] updating cached repository JuanPotato/unicode_bot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/JuanPotato/unicode_bot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/JuanPotato/unicode_bot" "work/ex/beta-1.37-6/sources/1.36.0/gh/JuanPotato/unicode_bot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/JuanPotato/unicode_bot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JuanPotato/unicode_bot" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/JuanPotato/unicode_bot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/JuanPotato/unicode_bot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a70a987e34e27cade89ecdcaed92fae74ed8481
[INFO] sha for GitHub repo JuanPotato/unicode_bot: 4a70a987e34e27cade89ecdcaed92fae74ed8481
[INFO] validating manifest of JuanPotato/unicode_bot on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of JuanPotato/unicode_bot on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing JuanPotato/unicode_bot
[INFO] finished frobbing JuanPotato/unicode_bot
[INFO] frobbed toml for JuanPotato/unicode_bot written to work/ex/beta-1.37-6/sources/1.36.0/gh/JuanPotato/unicode_bot/Cargo.toml
[INFO] started frobbing JuanPotato/unicode_bot
[INFO] finished frobbing JuanPotato/unicode_bot
[INFO] frobbed toml for JuanPotato/unicode_bot written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/JuanPotato/unicode_bot/Cargo.toml
[INFO] crate JuanPotato/unicode_bot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing JuanPotato/unicode_bot against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/JuanPotato/unicode_bot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] f0a25fea54d3a6e6374c24dbf99bd3e7d3f6fff5b072fdfec558b7b7630457bf
[INFO] running `"docker" "start" "-a" "f0a25fea54d3a6e6374c24dbf99bd3e7d3f6fff5b072fdfec558b7b7630457bf"`
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling enum-as-inner v0.2.1
[INFO] [stderr]    Compiling charname v0.2.0
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling trust-dns-proto v0.7.3
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling trust-dns-resolver v0.11.0
[INFO] [stderr]    Compiling reqwest v0.9.17
[INFO] [stderr]    Compiling tg_botapi v0.6.0-alpha.1
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tg_botapi-0.6.0-alpha.1/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `tg_botapi`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f0a25fea54d3a6e6374c24dbf99bd3e7d3f6fff5b072fdfec558b7b7630457bf"`
[INFO] running `"docker" "rm" "-f" "f0a25fea54d3a6e6374c24dbf99bd3e7d3f6fff5b072fdfec558b7b7630457bf"`
[INFO] [stdout] f0a25fea54d3a6e6374c24dbf99bd3e7d3f6fff5b072fdfec558b7b7630457bf